package com.okoj.excel_lib_rary.util;

import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;

import com.okoj.excel_lib_rary.config.Config;
import com.okoj.excel_lib_rary.data.net.WpsClient;
import com.okoj.excel_lib_rary.mimetype.MimeUtils;

import java.io.File;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Random;
import java.util.Set;

public class FileUtil {


    // 获取文件扩展名
    public static String getExtName(String filename) {
        int index = filename.lastIndexOf(".");

        if (index == -1) {
            return null;
        }
        String result = filename.substring(index);
        return result;
    }


    /**
     *  根据文件名字，判断文件类型
     * @param fileName
     * @return 服务器文件类型的参数
     */

    private final static Map<String,String> table = new HashMap<>();
    private final static Map<String,String> word = new HashMap<>();
    private final static Map<String,String> ppt = new HashMap<>();
    private final static Map<String,String> pdf = new HashMap<>();
    static {
        table.put("xls","s");
        table.put("xlt","s");
        table.put("et","s");
        table.put("xlsx","s");
        table.put("xltx","s");
        table.put("xlsm","s");
        table.put("xltm","s");


        word.put("doc","w");
        word.put("dot","w");
        word.put("wps","w");
        word.put("wpt","w");
        word.put("docx","w");
        word.put("dotx","w");
        word.put("docm","w");
        word.put("dotm","w");


        ppt.put("ppt","p");
        ppt.put("pptx","p");
        ppt.put("pptm","p");
        ppt.put("ppsx","p");
        ppt.put("ppsm","p");
        ppt.put("pps","p");
        ppt.put("potx","p");
        ppt.put("potm","p");
        ppt.put("dpt","p");
        ppt.put("dps","p");


        pdf.put("pdf","f");
    }
    public static String getServerArgumentFileType(String fileName) throws Exception{

        if(TextUtils.isEmpty(fileName)){
            throw new NullPointerException("文件名字是NULL");
        }
        String[] split = fileName.split("\\.");
        if(split.length<=1){
            throw new IllegalArgumentException("文件名字异常:"+fileName);
        }
        String extName = split[split.length-1];
        if(table.containsKey(extName)){
            return table.get(extName);
        }
        if(word.containsKey(extName)){
            return word.get(extName);
        }
        if(ppt.containsKey(extName)){
            return ppt.get(extName);
        }
        if(pdf.containsKey(extName)){
            return pdf.get(extName);
        }
        throw new IllegalArgumentException("暂时不支持的文件:"+fileName);
    }


    /**
     * 根据服务器的type拿到所属文件后缀名
     * @return
     */
    public static String getFileExtName(String fileType){

        if(TextUtils.isEmpty(fileType)){
            return null;
        }

        if(fileType.equals("w")){
            return ".docx";
        }

        if(fileType.equals("s")){
            return ".xlsx";
        }

        if(fileType.equals("p")){
            return ".pptx";
        }
        return "";

    }

    /**
     * 创建下载文件的
     * @param fileName
     * @return
     */
    public static File creteFilePath(String fileName,String objectKey) {
        try {
            if(!fileName.contains(".")){
                String[] split = objectKey.split("/");
                String ossFileName = split[split.length-1];
                fileName = ossFileName;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        Config config = WpsClient.getAppConfig();
        String downloadPath = config.getDownloadPath();
        File downloadDir = new File(downloadPath);
        if(!downloadDir.exists() || !downloadDir.isDirectory()){
            downloadDir.mkdirs();
        }
        File target = new File(downloadPath,fileName);
        if(target.exists()){
            target = new File(downloadPath, System.currentTimeMillis() +fileName);
        }
        return target;
    }

    public static void scan(String fileName, Context context){
        try {
            File file = new File(fileName);
            String type = MimeUtils.guessMimeTypeFromExtension(file.getName().substring(file.getName().lastIndexOf(".")+1));
            MediaScannerConnection.scanFile(context, new String[]{fileName}, new String[]{type}, new MediaScannerConnection.OnScanCompletedListener() {
                @Override
                public void onScanCompleted(String path, Uri uri) {

                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
    }



    /**
     * Get a file path from a Uri. This will get the the path for Storage Access
     * Framework Documents, as well as the _data field for the MediaStore and
     * other file-based ContentProviders.
     *
     * @param context The context.
     * @param uri The Uri to query.
     * @author paulburke
     */
    public static String getPath(final Context context, final Uri uri) {

        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }

            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {

                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(
                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }

                final String selection = "_id=?";
                final String[] selectionArgs = new String[] {
                        split[1]
                };

                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {
            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }

        return null;
    }

    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context The context.
     * @param uri The Uri to query.
     * @param selection (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     */
    public static String getDataColumn(Context context, Uri uri, String selection,
                                       String[] selectionArgs) {

        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {
                column
        };

        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                    null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }


    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }


    private static Random random;
    public static String generateRandomViewCountString(){
        if(random == null){
            random = new Random();
        }
        int i = random.nextInt(3000);
        return String.format("%s人使用",i+3000);
    }

}
